Scraper for band-saw pulleys



(No Model.)

J. H. WENTZ. SGRAPER FOR BAND SAW PULLEYS.

Patented July 5, 1892.

UN TED STATES TENT OFFICE.

-JOSEPH HENRY W'ENTZ, OF BARAGA, MICHIGAN.

SCRAPER FOR'BAND-SAW PU LLEYS.

SPECIFICATION forming part of Letters Patent No. 478,148, dated July 5,1892. Application filed March 8, 1892. Serial No. 424,203. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH HENRY WENTZ, a citizen of the United States,residing at Baraga, in the county of Baraga and-State of Michigan, haveinvented certain new and useful Improvements in'Scrapers for Band-SawPulleys; and I do declare the following to vhe a full, clear, and exactdescription of the in- Vention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

My invention relates to a newrand useful improvement in scrapers forband-saw pulleys; and it consists, generally stated, in providing meansfor yieldingly holding the scraper-plate in uniform contact with theperiphery of the pulley. This object I obtain by the constructionillustrated in the accompanying drawings, forming a part of thisspecification, wherein like letters of reference refer to like partswherever they occur,and in which Figure 1 is a perspective view of thedevice applied. Fig. 2 is a side elevation of the same.

In the drawings, A indicates the standard or support for the pulley, Bthe pulley, and B the band-saw.

0 indicates a plate secured to the standard, having a projection orplate 0 extending from the upper edge thereof, to which is secured asupporting-shelf D, provided with an opening d, the purposes of whichwill hereinafter he described.

Mounted in pedestals d on the shelf D is a rock-arm E, said arm beingformed with adownward extension at its outer end, from which projects abearing 6, through which passes a set-screw F.

Secured to an upward extension of the arm is the scraper-plate G, beingperforated for the passage of a bolt g, which yieldingly holds the sameagainst the extension through the medium of a star or yielding washer g.

F indicates a set-screw passing through the bearing 6 of the arm E, andhas pivotally secured on its upper end a split or bifurcated bearin g f,in which is mounted a grooved myself to the exact position of the rollerf, adapted to normally contact with the base of the scraper-plate andretain'the same in a uniform contact with the periphery of the pulley.

Passing through a bearing e at the inner end of the arm E is a set-screwH, provided with a cap h at its upper end, which acts in the capacity ofafollower for aspring I, whose other end is retained in place by a lug con the under side of the plate 0. To tighten or hold the scraper-platein firmer contact with the periphery of the pulley, it is only neces,sary to compress the spring I by extending the screw H through thebearing, which will exert a downward pressure on the inner end ofthe'rock-arm E, which, being pivoted in the pedestals, will force thescraper-plate against the pulley.

I do not wish to be understood as confining with relation to the pulleynor the means of support, for it will be obvious that the same couldbe'easily applied to the lower pulley; also, ifdesired, it could besupported by the shield instead of the standard.

Having thus described my invention, what I claim, and desire to securebyLetters Patent, is

1: In a scraper'for band-saw pulleys, the combination, with the pulleyand its support, of a shelf mounted on the support, a rock-arm mountedon the shelf, a scraper-plate yieldingly secured to one end of the arm,and a spring exerting its force on the opposite end of the arm tonormally hold the scraper-plate in contact with the pulley,substantially as and for the purposes described. r

2. In a scraper for band-saw pulleys, the combination, with the pulleyand its support, of a shelf attached to the support, a rock-arm mountedon the shelf, a scraper-plate yieldingly secured to one end of therock-arm, a roller mounted in the arm for holding the plate in evencontact with the pulley, and a spring for normally holding the plate incontact with the pulley, substantially as and for the purposesdescribed.

3. In a scraper for band-saw pulleys, the combination, with the pulleyand its support, of a shelf attached to said support, pedestals scraperV on the shelf, a rock-arm mounted in the pod I estals, a scraper-platesecured on one end of the arm, an adjustable roller normally contactingwith the base of the scraper-plate, a spring for exerting force on theother arm, and means for regulating the tension of the spring,substantially as and for the purposes specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH HENRY XVENTZ.

Witnesses:

WVM. COUCH, J; G. REAL.

